diff --git a/03-bootsector-memory/boot_sect_memory.asm b/03-bootsector-memory/boot_sect_memory.asm
index 7218841..3eaba95 100644
--- a/03-bootsector-memory/boot_sect_memory.asm
+++ b/03-bootsector-memory/boot_sect_memory.asm
@@ -24,9 +24,7 @@ int 0x10
 ; A register can't be used as source and destination for the same command.
 mov al, "3"
 int 0x10
-mov bx, the_secret
-add bx, 0x7c00
-mov al, [bx]
+mov al, [the_secret+0x7c00]
 int 0x10
 
 ; attempt 4